Bd+

[jermwhl]

I understand (i think) that BD+ is designed to prevent copying of discs. Is there something more special about this that will ACTUALLY prevent it though?
What is this all about and when is it supposed to be released?

[calgarymarc]

Originally Posted by jermwhl

I understand (i think) that BD+ is designed to prevent copying of discs. Is there something more special about this that will ACTUALLY prevent it though?
What is this all about and when is it supposed to be released?

http://www.afterdawn.com/glossary/terms/bdplus.cfm

BD+ is the name given to an experimental Digital Rights Management (DRM) mechanism that will be included on BD-ROM discs. The Blu-ray Disc Association was forced into providing this extra layer of protection following pressure from Fox. The HD DVD group did not agree to provide Fox with such a DRM over AACS. The fears about BD+ surround the possibility of studios like Fox theoretically being given the power to restrict Mandatory Managed Copy (a system that allows users to make digital copies of movies and send them around a home network).

BD+ allows for dynamic encryption schemes, meaning that if the protection were to be cracked, manufacturers could simply change the encryption scheme on new discs, so one single crack could not open up all BD-ROM discs. This is, of course a major advantage over the Content Scrambling System (CSS) protection used on DVD discs which was cracked years ago. All old and new DVDs containing CSS can be ripped from the disc to a HDD, or software is available to simply remove CSS on-the-fly.

OR:

http://en.wikipedia.org/wiki/BD%2B#BD.2B

BD+

BD+ is effectively a small virtual machine embedded in authorized players. It allows content providers to include executable programs on Blu-ray discs. Such programs can:

1. Examine the host environment, to see if the player has been tampered with. Every licensed playback device manufacturer must provide the BD+ licensing authority with memory footprints that identifies their devices.
2. Verify that the player's keys have not been changed.
3. Execute native code, possibly to patch an otherwise unsecure system.
4. Transform the audio and video output. Parts of the content will not be viewable without letting the BD+ program descramble it.

If a playback device manufacturer finds that its devices have been hacked, it can potentially release BD+ code that detects and circumvents the vulnerability. These programs can then be included in all new content releases.

The specifications of the BD+ virtual machine are only available to licensed device manufacturers.

OR:

http://www.blu-raydisc.com/top/searc...cle-14856.html

Blu-ray Disc Association Adopts Comprehensive Content Management System

September 08, 2005
2005-09-08 +02:00

AACS, BD+ Renewability Technology and ROM Mark Mass Piracy Prevention Offer the Most Extensive, Flexible Content Protection Available

HOLLYWOOD, Calif.--(BUSINESS WIRE)--Aug. 9, 2005--In a move to protect against illegal copying and large scale piracy while leaving consumers the flexibility to manage and enjoy copies of their legally purchased content, the Blu-ray Disc Association (BDA) has adopted the most comprehensive content management system ever employed on an optical disc format.

The Blu-ray content management system includes three primary components: Advanced Access Content System (AACS), "BD+", a Blu-ray-specific enhancement for content protection renewability, and ROM Mark, a measure unique to Blu-ray Disc to guard against mass production piracy or the mass duplication and sale of unauthorized copies of pre-recorded media.

"Content protection is a critical issue for next-generation media distribution," said IDC's Joshua Martin, Associate Research Analyst, Consumer Markets. "Finalizing the content protection scheme is critical for the launch of blue laser optical disc technology, and new protection schemes should allow for increased consumer flexibility while better protecting prerecorded content compared to current DVD technology."

The foundation of the Blu-ray content management system, AACS(1), is a state of the art content management system that is many times more powerful than that used in DVD. Additionally, AACS enables new consumer usage models around network functionality and internet connectivity including managing copies, in an authorized and secure manner.

In addition to AACS, the BDA took a dramatic step in the battle against mass production piracy with the adoption of ROM Mark. ROM Mark, which is unique to Blu-ray Disc, is a new technology designed specifically to thwart large scale, mass production piracy, a problem that experts estimate costs the movie industry alone in excess of $3 billion per year in lost revenue. To combat this, the ROM Mark technology embeds a unique and undetectable identifier in pre-recorded BD-ROM media such as movies, music and games. While invisible to consumers, this ROM Mark can only be mastered with equipment available to licensed BD-ROM manufacturers, essentially preventing unauthorized copies of a disc.

The BDA also adopted "BD+", a Blu-ray Disc specific programmable renewability enhancement that gives content providers an additional means to respond to organized attacks on the security system by allowing dynamic updates of compromised code. With these enhancements, content providers have a number of methods to choose from to combat hacks on Blu-ray players. Moreover, BD+ affects only players that have been attacked, as opposed to those that are vulnerable but haven't been attacked and therefore continue to operate properly.

"The level of unauthorized copying and industrial piracy associated with DVD not only eopardizes studios and other content creators, but also results in increased costs and limited flexibility for consumers," said Maureen Weber, General Manager, of Hewlett Packard's Optical Storage Solutions. "It is good news for everyone that the BDA has adopted a series of measures that gets it right for the next disc format."



From what I know, this process has been completed and it's now in the stages of being successfully implemented on Blu-ray. It may be a few months before we actually see any BD's with this technology. No firm date as of yet.

[jermwhl]

Wow! Great reply! I didin't expect that for a first reply! Thank you! I guess i like exclamation points today!! !! !!!!!!!!!!! Ok i'm done.

Thanks though. I guess I should have googled it first too lazy i guess, or getting to dependent on blu-ray.com

so is this the technology i've heard about that will require people to have HDMI to view BD?

[movies3]

wow thanks for the awesome respone! thanks and ty u jermwhl for asking the question

[dialog_gvf]

The HD DVD group did not agree to provide Fox with such a DRM over AACS. The fears about BD+ surround the possibility of studios like Fox theoretically being given the power to restrict Mandatory Managed Copy (a system that allows users to make digital copies of movies and send them around a home network).

Which begs the question: Where is MMC?!

BD+ can't restrict what isn't available.

Gary

[theknub]

Originally Posted by dialog_gvf

Which begs the question: Where is MMC?!

BD+ can't restrict what isn't available.

Gary

i'm trying to be patient over this one....


granted, i need a drive first anyway

[WriteSimply]

Originally Posted by jermwhl

so is this the technology i've heard about that will require people to have HDMI to view BD?

No. That would be HDCP. If it is turned on and if your HDTV does not have HDCP via DVI/HDMI, your resolution can get reduced to 480p.


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